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The SA node normally functions as the pacemaker for the entire heart because its intrinsic rate is the fastest in the system. From the SA node, impulses spread out over the atria, causing them to contract.
What else can I help you with?
What is the sa node?
The SA node is the "pacemaker" of the heart. Cells in the SA node are called "pacemaker" cells and they direct the contraction rate of the entire heart by generating action potentials.
What is the internal pacemaker of the heart called?
SA node (Sinus Node)
What is the internal pacemaker of the human heart called?
SA node (Sinus Node)
Why the sino atria node is regarded as a pacemaker in the heart?
The sinoatrial, or SA, node is known as the pacemaker of the heart. There are other potential pacemakers if the SA node fails, but it is the main pacemaker.
What is the main pace maker of the heart?
The primary pacemaker of a normal healthy heart is the sinus node (or SA node). It is located in the right atria of the heart.
What is the common name for the sinoatrial node?
which of the following applies to the sinoatrial node? a)it is a mass of nerve cells b)it produces important enzymes c)it generates autorhythmic impulses to the contractthe heart d)it contains both bicuspid and tricuspid valves
Is the pacemaker of the heart under normal circumstances is called the sinoatrial SA node?
Yes the sinoatrial node is also called the pacemaker under all circumstances
What is the technical term for your pacemaker?
The heart's "pacemaker" is the SA (sinoatrial) node.
Which heart structure does the pacemaker substitute?
The SA Node.
What pacemaker of the heart initiates depolarization under normal conditions?
The primary pacemaker of the mammalian heart is the sino-atrial node. If the SA node fails, the atrioventricular node (AV node) takes over pacemaking.
Where is the Natural pacemaker?
The SA node, the natural pacemaker of the heart, is found in the right atrium of the heart.
The SA node is the normal pacemaker of the heart because the SA node?
depolarizes to its threshold potential before other pacemakers in the heart
